I did not think of Crows as hunters until I did some research after finding these tracks. Apparently Crows are known to hunt. These pictures show the trail of what is probably a Meadow Vole but could be a mouse, disappear into the talons of an American Crow. Look closely at the bottom of the frame in the picture below.
We could tell it was a crow by the, size, robustness and arrangement of toes. The two inside upper toes are closer together than the outer.